CN212136093U

CN212136093U - Metal film resistor with built-in low temperature coefficient

Info

Publication number: CN212136093U
Application number: CN202020915599.2U
Authority: CN
Inventors: 李志珣
Original assignee: Tianjin Sanhuan Resistor Co ltd
Current assignee: Tianjin Sanhuan Resistor Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-12-11
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a built-in low temperature coefficient's metal film resistor, including the shielded box, the upside of shielded box is the opening design, and there is the apron upside of shielded box through the mounting screw, and the inserting groove has been seted up to the left and right sides of shielded box, and the inside of inserting groove closely laminates and has the plugboard, and the downside of plugboard has inlayed sealed semi-ring, and the inside downside of inserting groove has inlayed sealed semi-ring down, and sealed semi-ring closely laminates with sealed semi-ring down, and the inside of sealed semi-ring and sealed semi-ring down closely laminates and has the pin, and the inner fixed mounting of the left and right sides pin has the resistor body. The device can isolate the metal film resistor from the external environment, avoids influencing the use performance of the metal film resistor, and is convenient to install.

Description

Metal film resistor with built-in low temperature coefficient

Technical Field

The utility model relates to a metal film resistor technical field specifically is a metal film resistor of built-in low temperature coefficient.

Background

The metal film resistor is a resistor which takes special metal or alloy as resistance material and basically forms a resistance film layer on ceramic or glass by a vacuum evaporation or sputtering method. It has excellent heat resistance, noise potential, temperature coefficient, voltage coefficient and other performance. Are often widely used as precision and high stability resistors.

The metal film resistor with the low temperature coefficient is high in temperature stability, the resistance value of the metal film resistor is only slightly changed when the temperature of the metal film resistor changes, and when the metal film resistor is used, all structures are exposed to the outside for a long time and are easily corroded by the external environment, so that the using performance of the metal film resistor is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a metal film resistor of built-in low temperature coefficient to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a metal film resistor of built-in low temperature coefficient, includes the shielded box, the upside of shielded box is the opening design, there is the apron upside of shielded box through the mounting screw, the inserting groove has been seted up to the left and right sides of shielded box, the inside of inserting groove closely laminates there is the plugboard, the downside of plugboard has inlayed sealed semi-ring, the inside downside of inserting groove has inlayed sealed semi-ring down, sealed semi-ring and the inseparable laminating of sealed semi-ring down, the inside of sealed semi-ring and sealed semi-ring down closely laminates there is the pin, the left and right sides the inner fixed mounting of pin has the resistor body.

Preferably, the upper and lower both sides of the surface of resistor body and pin are closely laminated with ceramic shell, upper and lower both sides the outside fixed mounting of ceramic shell has the insulating layer, the outside fixed mounting of insulating layer has the buffer layer, the upside the buffer layer is with apron fixed assembly, the downside the buffer layer fixed mounting is at the inside downside of shielded cell.

Preferably, the outer ends of the pins extend 15 mm beyond the isolation box.

Preferably, the lower ends of the front surface and the rear surface of the isolation box are uniformly and fixedly provided with connecting rings.

Preferably, wire loops are fixedly mounted at the left and right ends of the pin.

Compared with the prior art, the beneficial effects of the utility model are that: the metal film resistor with the built-in low temperature coefficient can be isolated from the external environment, the use performance of the metal film resistor is prevented from being influenced, and the metal film resistor is convenient to install.

Drawings

Fig. 1 is a schematic cross-sectional view of the structure of the present invention.

Fig. 2 is a left side view of the structure of the present invention.

In the figure: 1 isolation box, 2 buffer layers, 3 thermal insulation layers, 4 ceramic shells, 5 cover plates, 6 pins, 7 wiring rings, 8 plugging grooves, 9 plugging plates, 10 sealing half rings, 11 lower sealing half rings, 12 connecting rings and 13 resistor bodies.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a metal film resistor of built-in low temperature coefficient, including shielded box 1, the upside of shielded box 1 is the opening design, there is apron 5 shielded box 1's upside through the mounting screw, inserting groove 8 has been seted up to shielded box 1's the left and right sides, inserting plate 9 has closely been laminated in inserting groove 8's inside, inserting plate 9's downside has inlayed sealed semi-ring 10, inserting groove 8's inside downside has inlayed sealed semi-ring 11 down, it closely laminates with sealed semi-ring 11 down to go up sealed semi-ring 10, sealed semi-ring 10 closely laminates with the inside of sealed semi-ring 11 down has pin 6, the inner fixed mounting of left and right sides pin 6 has resistor body 13.

The isolation box 1 and the cover plate 5 can form a complete whole, the plug board 9 can be assembled with the plug groove 8 in a plug mode, and the upper seal half ring 10 and the lower seal half ring 11 can be attached to the pins 6 to form a sealing structure.

Both sides closely laminate about the surface of resistor body 13 and pin 6 have ceramic shell 4, and the outside fixed mounting of upper and lower both sides ceramic shell 4 has insulating layer 3, and the outside fixed mounting of insulating layer 3 has buffer layer 2, and upside buffer layer 2 and apron 5 fixed mounting, 2 fixed mounting of downside buffer layer are at the inside downside of shielded box 1.

Ceramic shell 4 plays insulating heat dissipation effect, and the temperature of interior external environment can be kept apart to insulating layer 3, and buffer layer 2 can cushion the vibration on the isolation box 1.

The outer ends of the pins 6 extend 115 mm out of the isolation box. A sufficient mounting distance of the pins 6 is reserved.

The lower ends of the front and the rear surfaces of the isolation box 1 are uniformly and fixedly provided with connecting rings 12. The connection ring 12 can be fixed by mounting with screws.

Wire loops 7 are fixedly mounted at the left and right ends of the lead 6. Electrical connection to the outside is facilitated by the wire loop 7.

The working principle is as follows: during the use, install earlier go up go-between 12 through the screw fixedly, resistor body 13 is placed inside isolation box 1, contact with downside ceramic shell 4, pin 6 contacts with lower seal semi-ring 11 respectively, after being connected through wiring ring 7 and outside electricity, through screw lock apron 5, plugboard 9 can be with the assembly of pegging graft of inserting groove 8, upper seal semi-ring 10 and lower seal semi-ring 11 can laminate with pin 6, form seal structure, ceramic shell 4 plays the insulating heat dissipation effect, the temperature of interior external environment can be kept apart to insulating layer 3, the vibration on isolation box 1 can be cushioned to buffer layer 2.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A kind of metal film resistor with built-in low temperature coefficient, characterized by that: including isolation box (1), the upside of isolation box (1) is the opening design, there is apron (5) upside of isolation box (1) through the screw mounting, inserting groove (8) have been seted up to the left and right sides of isolation box (1), inserting plate (9) have closely been laminated in the inside of inserting groove (8), the downside of inserting plate (9) has inlayed sealed semi-ring (10), the inside downside of inserting groove (8) has inlayed sealed semi-ring (11) down, it closely laminates with sealed semi-ring (11) down to go up sealed semi-ring (10), the inside of sealed semi-ring (10) and sealed semi-ring (11) down closely laminates pin (6), the left and right sides the inner fixed mounting of pin (6) has resistor body (13).

2. The metal film resistor with a built-in low temperature coefficient according to claim 1, wherein: the resistor is characterized in that a ceramic shell (4) is tightly attached to the upper side and the lower side of the outer surface of the resistor body (13) and the pin (6), the upper side and the lower side of the outer surface of the ceramic shell (4) are fixedly provided with a heat insulation layer (3), a buffer layer (2) is fixedly provided with the outer side of the heat insulation layer (3), the upper side of the heat insulation layer is fixedly provided with the buffer layer (2) and the cover plate (5), and the buffer layer (2) is fixedly arranged on the lower side of the inner part of.

3. The metal film resistor with a built-in low temperature coefficient according to claim 1, wherein: the outer end of the pin (6) extends out of the isolation box (1) by 15 mm.

4. The metal film resistor with a built-in low temperature coefficient according to claim 1, wherein: the lower ends of the front surface and the rear surface of the isolation box (1) are uniformly and fixedly provided with connecting rings (12).

5. The metal film resistor with a built-in low temperature coefficient according to claim 1, wherein: and wire connecting rings (7) are fixedly arranged at the left end and the right end of the pin (6).